William Blair Investment Management
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William Blair Investment Management’s Spire SR Stock Holding History

William Blair Investment Management’s Portfolio SR Stock Details SR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$21.6M Sell
276,218
-73,815
-21% -$6.34M 0.06% 241
2026
Q1 		$31.7M Buy
350,033
+11,017
+3% +$967K 0.1% 182
2025
Q4 		$28M Sell
339,016
-35,034
-9% -$2.99M 0.08% 211
2025
Q3 		$30.5M Buy
374,050
+88,154
+31% +$6.71M 0.08% 210
2025
Q2 		$20.9M Sell
285,896
-22,247
-7% -$1.67M 0.06% 282
2025
Q1 		$24.1M Sell
308,143
-152,626
-33% -$11.2M 0.07% 266
2024
Q4 		$31.3M Buy
460,769
+11,109
+2% +$744K 0.08% 244
2024
Q3 		$30.3M Sell
449,660
-13,592
-3% -$882K 0.07% 235
2024
Q2 		$28.1M Sell
463,252
-883
-0.2% -$53.3K 0.07% 238
2024
Q1 		$28.5M Sell
464,135
-101
-0% -$6.04K 0.07% 251
2023
Q4 		$28.9M Sell
464,236
-8,959
-2% -$535K 0.08% 234
2023
Q3 		$26.8M Sell
473,195
-34,276
-7% -$2.08M 0.09% 234
2023
Q2 		$32.2M Buy
507,471
+9,468
+2% +$635K 0.1% 218
2023
Q1 		$34.9M Buy
498,003
+2,058
+0.4% +$146K 0.12% 177
2022
Q4 		$34.2M Buy
495,945
+34,718
+8% +$2.36M 0.13% 169
2022
Q3 		$28.7M Sell
461,227
-8,268
-2% -$591K 0.11% 203
2022
Q2 		$34.9M Sell
469,495
-88,093
-16% -$6.62M 0.13% 184
2022
Q1 		$40M Buy
557,588
+67,798
+14% +$4.49M 0.12% 185
2021
Q4 		$31.9M Sell
489,790
-846
-0.2% -$53.5K 0.09% 248
2021
Q3 		$30M Buy
490,636
+489,616
+48,002% +$33.5M 0.08% 267
2021
Q2 		$74K Buy
+1,020
New +$76K ﹤0.01% 426
2017
Q2 		– Sell
-301,244
Closed -$20.3M – 470
2017
Q1 		$20.3M Sell
301,244
-836
-0.3% -$54.4K 0.08% 239
2016
Q4 		$19.5M Buy
302,080
+26,855
+10% +$1.69M 0.08% 238
2016
Q3 		$17.5M Sell
275,225
-2,328
-0.8% -$156K 0.07% 247
2016
Q2 		$19.7M Buy
277,553
+28,130
+11% +$1.85M 0.08% 218
2016
Q1 		$16.9M Sell
249,423
-2,892
-1% -$184K 0.07% 232
2015
Q4 		$15M Buy
+252,315
New +$14.5M 0.06% 241

Other funds holding SR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
CAPTRUST Financial Advisors
CAPTRUST Financial Advisors Raleigh, North Carolina $65.5B AUM 24.25% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return
VNIM
Vaughan Nelson Investment Management Houston, Texas $11.3B AUM 53% 1-Year Est. Return

William Blair Investment Management's SR Position: Q2 2026 in Review

William Blair Investment Management reduced its Spire (SR) stake by 21% in Q2 2026, selling an estimated $6.34M and leaving 276,218 shares worth $21.6M. The position accounts for 0.06% of the portfolio, ranked #241.

William Blair Investment Management first reported a position in SR in Q4 2015 and has held it in 27 quarters since. The position peaked at $40M in Q1 2022. 396 funds tracked by Wall St. Rank hold SR as of Q2 2026.

  • William Blair Investment Management held 276,218 shares of Spire worth $21.6M as of Q2 2026.
  • William Blair Investment Management sold 73,815 Spire shares in Q2 2026, an estimated $6.34M.
  • Spire made up 0.06% of William Blair Investment Management's portfolio in Q2 2026, its #241 holding.
  • William Blair Investment Management first reported a position in Spire in Q4 2015 and has held it in 27 quarters since.
  • William Blair Investment Management's Spire position peaked at $40M in Q1 2022.
  • 396 funds tracked by Wall St. Rank held Spire as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.